Support and housing for photoelectric cells



Feb. 13, 17934. 1 s. FRAPPIER ET AL. 1,946,681

SUPPORT AND HOUSING FOR PHOTO-ELECTRIC CELLS Original Filed March 30.1929 INVENTORS Louis S. F'ru.

ATTORN EYS Patented Feb. 13, 1934 UNITED STATES PATENT OFFICE SUPPORTAND HOUSING FOR PHOTO- ELECTRIC CELLS Original application March 30,1929, Serial No. 351,393. Divided and this application July 24, 1930.Serial No. 470,354

6 Ciaims.

This invention relates to motion picture projection machines, and moreparticularly to a mechanism for reproducing sound from a photographicsound record.

The present application is a division of our copending applicationSerial No. 351,393, filed March 30, 1929, for sound reproducingmechanism and relates particularly to the photoelectric cell chamber andsupport.

An object of the invention is to provide a sim` pliiled support for aphotoelectric cell whereby the cell may be readily adjusted in alldirections and brought into proper alignment with the proe jection ray.

Another object is to provide a light proof chamber for the photoelectriccell whereby the operation thereof is not interfered with by light fromextraneous sources.

A still further object is to provide a cheap, simple and dependabledevice of the type above indicated.

The invention also consists in certain new and original features ofconstruction and combinations of parts hereinafter set forth andclaimed.

Although the novel features which are believed to be characteristic ofthis invention will be particularly pointed out in the claims appendedhereto, the invention itself, as to its objects and advantages, theInode of its operation and the manner of its organization may be betterunderstood by referring to the following description taken in connectionwith the accompanying drawing forming a part thereof, in which Fig. l isa side elevation of the photoelectric cell and support therefor;

Fig. 2 is an end elevation of the photoelectric cell showing the supportpartly in section; and

Fig. 3 is a section taken o-n the line 3-3 of Fig. l.

Like reference characters denote like parts in the several gures of thedrawing.

In the following description and in the claims parts will be identifiedby specific names for convenience, but they are intended to be asgeneric in their application to similar parts as the art will permit.

Referring to the drawing more in detail the invention is shown ascomprising a photoeleotric cell 10 which is mounted in a split socket1l. One end of said socket is rigidly secured to rod 12 as by screw 13,and the other end of said socket is adjustably secured thereto by setscrew 14. By suitable adjustment of set screw 14 the socket may beclamped about the base of cell 10 for securely holding said basetherein.

(Cl. Z50-27.5)

Rod 12 is provided at its end with a ball 15 which is mounted in a splitsocket 16. Said socket 16 is carried by rod 17 Which is mounted in wall18 of the photoelectric cell compartment and is adjustably secured insaid Wall by nuts 19. Screw 20 (Fig. 1) threaded into socket 1d permitsthe socket to be clamped about ball 15 for securing the cell in thedesired position.

The cell compartment is closed by door 3 0 which is hingedly securedthereto as by hinge 21 and is provided with a liner 22 of resilientmaterial, such as felt or rubber, which is adapted to make contact withwall 18 when the door is closed and forms a positive seal to preventaccess of light into the compartment.

Housing 18 is provided with an aperture 25 which is adapted to registerwith photoelectric cell 10. A washer 26 of resilient material, such asfelt, is positioned around said aperture to prevent injury to the celland form an effective light seal. Said washer is provided with anaperture which registers with aperture 25 and permits the desired raysto be applied to cell 10.

It will be noted that the above described mechanism may be adjusted soas to bring cell 10 into any desired relationship to aperture 25 bymeans of the various adjustments of the socket 11 and rods 12 and 17.Rod 17, for example, can be adjusted longitudinally by varying theposition of nuts 19. Rod 12 can be angularly adjusted with respect torod 17 by means of ball 15 and socket 16 and clamped in the desiredposition by set screw 20. The photoelectrio cell 10 can also be adjustedrotatably and vertically in split socket 11 and clamped by means of setscrew 14. Furthermore, when it is desired to remove the cell from theassembly it is only necessary to loosen set screw 14 and then remove thecell from socket 11. This can be accomplished without disturbing any ofthe other adjustments.

The flexible material 22 on door 30 serves to maintain the light sealand assure the operation of the system without interference ofextraneous light rays with the photoelectric cell 100 and at the sametime compensates for any inequalities in workmanship which wouldotherwise prevent the tight flt between the door and housing 18.

While certain novel features of the invention 105 have been shown anddescribed and are pointed A out in the annexed claims, it will beunderstood that various omissions, substitutions and changes in theforms and details of the device illustrated and in its operation may bemade by those skilled 110 in the art without departing from the spiritof the invention.

What is claimed is:

1. In combination, a. photoelectric cell compartment having an aperturetherein, a. photoelectric cell, means for supporting said cell in saidcompartment and adjusting the position thereof into correct alignmentwith said aperture and a flexible washer mounted between said cell andsaid aperture to prevent injury to said cell and form a light seal.

2. A photoelectric cell compartment comprising a housing having anaperture therein, means for mounting a photoelectric cell in saidcompartment and adjusting said cell with respect thereto whereby acorrect alignment thereof with said aperture may be obtained, a flexiblemember interposed between said cell and said aperture and having anaperture in register with said rst mentioned aperture, said memberserving to prevent injury to said cell and to form a light seal, a doorfor said chamber and a liner of flexible material mounted on said doorin a position to Contact with the walls of said chamber when said dooris in closed position for forming a light seal and preventing undesiredlight rays from reaching said cell.

3. In combination, a housing forming a photoelectric cell chamber, saidhousing having an aperture therein, a photoelectrio cell in saidchamber, means for mounting said cell in alignment with said aperture,means providing vertical adjustment of said cell, means providingtransverse adjustment thereof with respect to said aperture, and meansforming a light seal between said cell and the walls of said aperture.

4. In combination, a housing forming a photoelectric cell chamber, saidhousing having an aperture therein, a photoelectric cell in saidchamber, means for mounting said cell in alignment with said aperturecomprising a socket, a support therefor, means providing substantiallyuniversal adjustment of said support with respect to said aperture, andmeans to effect a light seal between said cell and the Walls of saidaperture.

5. In combination, a housing forming a photoelectric cell chamber, saidhousing having an aperture therein, a photoelectric cell in saidchamber, means for mounting said cell in alignment with said aperturecomprising a socket, a support therefor, means to vertically adjust saidsocket with respect to said support, means carried by said housing formounting said support for substantially universal movement, and means toeffect a light seal between said cell and the walls of said aperture.

6. In combination, a photoelectric cell, a housing forming asubstantially light sealed chamber for said cell, said housing having anaperture adapted to admit light to said cell, means mounting said cellin alignment with said aperture, and means for adjusting the relativepositions of said cell and said aperture, and means forming alight sealbetween said cell and the Walls of said aperture.

LOUIS S. FRAPPIER. EWALD BOECKING.

